std::array::at

From Cppreference

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std::array
Member functions Element access array::at array::operator[] array::front array::back array::data Iterators array::begin array::cbegin array::end array::cend array::rbegin array::crbegin array::rend array::crend Capacity array::empty array::size array::max_size Modifiers array::fill array::swap

​reference       at( size_type pos );​		(C++0x feature)
​const_reference at( size_type pos ) const;​		(C++0x feature)

Returns a reference to the element at specified location pos. Bounds checking is performed, exception of type out_of_range will be thrown on invalid access.

Contents 1 Parameters 2 Return value 3 Complexity 4 See also

Parameters

pos

-

position of the element to return

Return value

reference to the requested element

Complexity

constant

See also

operator[]	access specified element (public member function)